Improvement in lubricating-journals



E. A. CHAPMAN.

Lubricating lour`nals.

ted Augu st 26 Paten www UNITED STATES PATENT OFFICE.

vGEORGE A. CHAPMAN, OE vvOONsOCKET, RHODE ISLAND, AssreNoE To WoONsOCKET MACHINE COMPANY, OE sAME PLACE.

IMPROVEMENT IN LUB-RICATING-JOURNALS.

speeineetien ferming part ef Lettere Patent No. 142,2"06, dated August 2o, i873; eppneetien mea f May 3, 1873.

To all whom it may concern: Be it known that I, GEORGE A. CHAPMAN of Woonsocket, in theIv county of Providence Y and State of Rhode Island, have invented a new and valuable Improvement in Devices for Oiling Journal-Bearings; and Ido herebydeclare that the following is a full, clear, and exact description of the construction and opera` tion of the same, reference being had to the annexed drawings making a part of this specification, and to the letters and figures of reference marked thereon.

Figure l of the drawings is a representation of my self-feeding journal-bearing by a side" elevation. Fig. 2 is a central cross-section. Fig. 3 is a bottom view of an inclosing shell of the lower bearing. Fig. 4 is a bottom view of the lower bearing.

My invention relates to an improved device for oiling journal-bearings, by which the oil is raised from a removable oil-cup below the j struction consists of a top bearing, B, and a shell, C, which incloses the lower bearing D, and, by means of bearing-lugs c c, is supported and adjusted in the hanger. The top bearing B is provided at the Vends with chambers b b, forming parts of the said bearing, and with longitudinal ridges or inverted gutters b b running along the sides of the bearing, and between the bearing proper and the outside of the cap or top bearing B. The purpose of the chambers b b and the inverted gutters b b is to prevent waste oil from running outside of the journal-boxes and from dropping on the flooring of the shop, and to discharge it into the bottom shell C. The shell G is of the same shape as the cap B where they join. It is provided with horizontal rockcr-bearin gs a a, by

'and causes all the oil to run down on it. The

inside surface of the shell C is provided with V-shaped ribs cl c1 c1 c1, and to the bottom of it an oil-cup, E, is fastened by means ofscrewthreads, or in any other mode, to make it removable. The lower bearing D, which may be either solid or lined with composition like the top bearing, is provided at the bottom with triangular blocks d1 d1 d1 d1, so'arranged that they fit into the corners of the ribs c1 c1 c1 cl, thereby serving the double purpose of' supporting and of steadying the bearing D. The space hereby created `between the bearing D and the shell O is utilized for the collection of the waste oil, which takes its course toward the opening d and into the cup E. The supply for feeding or oiling is effected by a tube or funnel, d2, at the bottom of the bearing D, the lower part of which is inserted into the oil in the cup E. As the most perfect wear and fit of the journal and journal-boxes takes place at the center of their length, this position is the most favorable for the application of oil, and for that reason I locate the funnel d2 in the center of the bearing D. The upper opening of the funnel d2 is countersunk or sloped down, and spread at its termination where it joins the bearing-surface. This sloped3 runs in the same direction withlthe shaft, and serves the purpose of wedging the oil between the journal and its bearing when the shaft is revolving. The vacuum hereby created in the funnel d2 causes the atmosphere to exercise its pressure on the surface of the oil in the cup E, and thereby fill the funnel d2 and the oil-wedge d3. The oil carried along by the revolving journal into the bearings is thrown out between the joints and at the ends of' the said bearings by the operation of the centrifugal power. It is collected in the shell C, and flows through the opening d into the cup E, to be again elevated in the funnel d2, and drawn into the wedge 13. To obtain as much Working-surface of the journal as possible, I make the funnel d2 oblong. I prefer to provide the corners of the cap B with four lips, b2, which bear against the inside corners ofthe shell C, and thereby keep the cap B and shell G rigidly together. To avoid the application of a collar, or a reduction in the size of the shaft for the construction of a good journal, I provide the bearing D at one of its ends with a thrust-plate, F, against which the end of the journal is bearing. When a central bearing is needed, I omit the thrust-plate F, provide the cap B and shell O with openings at both ends, and place a scraper, c2, at each end of the bearing D.

This construction presents an elegant and clean appearance, it makes the attachment of large and ponderous drip-pansv unnecessary, and it removes all danger of upsetting such drip-pans on the heads of operators or on the machinery below. The laborer, who had, at

certain intermissions during the day, to refill the oil-holes or the oil-cups and empty the drip-pans, may be more advantageously employed, as the cup E, according to its size, may only require to be cleaned and refilled once or twice a Week. As the oil does not undergo so much handling and changingof vessels as by the old method of oiling, the quantity of oil saved by my improvement forms no triing item in the running expenses of machinery.

What I claim as new, and desire to secure by Letters Patent, is y A removable oil-cup, E, with a journal-bearing having the inverted oil-elevating tube d2 and vacuum-chamber d3, substantially as specilied.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two Witnesses.

GEO. A. CHAPMAN.

Witnesses:

Moses HOBURT, GEORGE A. WILBUR. 

